One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,7)(4,8)(5,6)(9,10)(11,13)(12,14)(15,16)(17,18)(19,24)(20,29)(21,25)(22,30)(23,26)(27,32)(28,31) involution — undirected(2,6)(7,8)(9,11)(10,13)(12,15)(14,16)(17,19)(18,24)(20,27)(21,22)(23,28)(25,30)(26,31)(29,32) involution — undirected(1,3,5,4)(2,7,6,8)(11,15)(13,16)(17,20,29,18,23,30,22,26)(19,27,32,24,28,25,21,31)(11,15)(13,16)(17,21,23,32)(18,25,26,27)(19,22,28,29)(20,24,30,31)(1,4,5,3)(2,8,6,7)(10,14)(13,16)(19,28)(21,32)(24,31)(25,27)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.